Watch casing



FIG. 1 is a top right perspective view of a watch casing showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof, the front and rear views being identical thereto;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top right perspective view of my design of FIG. 1 shown in an alternative environment; and,

FIG. 7 is a bottom right perspective view of FIG. 6.

The structural features depicted by broken lines in FIGS. 6 and 7 have been shown for the purpose of illustrating environment that forms no part of the claimed design. 

CLAIM I claim the ornamental design for a watch casing, as shown and described. 